Compromise

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Compromise

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Compromise

  1. 1. Galapagos Adaptations Exploring how species have adapted to their island environments over time.
  2. 2. Galapagos Animal Gallery <ul><li>The paired photographs you will see depict similar animals of the same size. </li></ul><ul><li>Compare these images carefully. </li></ul><ul><li>List any differences you notice, no matter how small. </li></ul><ul><li>Briefly describe each animal’s habitat and diet. </li></ul>
  3. 3. Marine Iguana Land Iguana (2006). Darwin & the Galapagos Islands. Retrieved January 4, 2007, from Go Visit Galapagos Web site: http://www.govisitgalapagos.com/darwin/default.asp National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  4. 4. Marine Iguana Land Iguana (Jan 3, 2007). Photos/Mixed Selection. Retrieved January 9, 2007, from www.CQJ.dk Travelling, Sports Fishing & Photography Web site: http://www.cqj.dk/mix-photo-eng.htm (2007). Galapagos Pictures, Galapagos Wildlife. Retrieved January 9, 2007, from in-quito.com Galapagos Pictures Web site: http://www.in-quito.com/galapagos/pictures-2.htm
  5. 5. Saddleback Tortoise Domed Tortoise National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  6. 6. Saddleback Tortoise Domed Tortoise (2007). Galapagos Islands Guided Tour. Retrieved January 9, 2007, from AGalapagos Islands Guided Tour - Isla Santa Cruz, Ecuador Web site: http:// www.discovergalapagos.com/santacru.html (2006). Tortoise T-Shirts. Retrieved January 9, 2007, from JungleWalk.com Gifts for Animal Lovers Web site: http://www.junglewalk.com/shop/Tortoise-t-shirts.htm
  7. 7. Flightless Cormorant Cormorant National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  8. 8. Flightless Cormorant Cormorant (2007). Cormorant Showing Off Photo. Retrieved January 9, 2007, from TrekNature Web site: http://www.treknature.com/gallery/North_America/Canada/photo45462.htm (2007). Flightless Cormorant. Retrieved January 9, 2007, from ARKive: Images of Life on Earth Web site: http:// www.arkive.org/species/GES/birds/Phalacrocorax_harrisi /
  9. 9. <ul><li>Is the only sea-going iguana in the world </li></ul><ul><li>Flat tail </li></ul><ul><li>Square nose </li></ul><ul><li>Dark coloration </li></ul><ul><li>Partially webbed feet </li></ul><ul><li>Coloration camouflages them in the dark lava on which they live </li></ul><ul><ul><li>Enables iguanas of all ages to absorb more heat from the sun </li></ul></ul>Marine Iguana
  10. 10. <ul><li>A large relative of the South American and Caribbean terrestrial iguana </li></ul><ul><li>Round tail </li></ul><ul><li>Pointed nose </li></ul><ul><li>Brownish-red in color on top </li></ul><ul><li>Yellow-orange underneath </li></ul><ul><li>Eats grass and other ground plants, especially the large prickly-pear cactus. </li></ul>Land Iguana
  11. 11. Marine Iguana <ul><li>Lives near the water </li></ul><ul><li>Lives in dry regions on land </li></ul>Land Iguana vs. <ul><li>Dark color </li></ul><ul><li>Short snout </li></ul><ul><li>Long claws for gripping rocks </li></ul><ul><li>Light color </li></ul><ul><li>Long snout </li></ul><ul><li>Short claws </li></ul>National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html (2006). Darwin & the Galapagos Islands. Retrieved January 4, 2007, from Go Visit Galapagos Web site: http://www.govisitgalapagos.com/darwin/default.asp
  12. 12. <ul><li>One of the major groups of giant tortoises in the Galapagos Islands </li></ul><ul><li>Arched carapace (shell) in the front </li></ul><ul><li>Long legs </li></ul><ul><li>Long snout </li></ul><ul><li>Long neck that allows it to reach for its food high above the ground </li></ul><ul><li>Found in the dry areas of Espanola, Pinzon, Pinta, and Fernandina Islands </li></ul>Saddleback Tortoise
  13. 13. <ul><li>One of the major groups of giant tortoises in the Galapagos Islands </li></ul><ul><li>Rounded shell </li></ul><ul><li>Blunt snout </li></ul><ul><li>Shorter neck </li></ul><ul><li>Found on islands with rich vegetation (like Santa Cruz and Isabela) </li></ul><ul><li>Larger and heavier </li></ul><ul><li>Rounded shell allows it to move through the thick vegetation more easily than the saddleback tortoise </li></ul>Domed Tortoise
  14. 14. <ul><li>Lives in dry region </li></ul>vs. <ul><li>Lives in an area of thick vegetation </li></ul>Saddleback Tortoise Domed Tortoise <ul><li>Eats leaves high in trees </li></ul><ul><li>Highly arched shell opening </li></ul><ul><li>Long neck </li></ul><ul><li>Long legs </li></ul><ul><li>Eats grasses and leaves close to ground </li></ul><ul><li>Low, rounded shell opening </li></ul><ul><li>Short neck </li></ul><ul><li>Short legs </li></ul>National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  15. 15. <ul><li>Found only in the Galapagos </li></ul><ul><li>Dark with black coloration above and brown underneath </li></ul><ul><li>Streamlined body </li></ul><ul><li>Strong legs </li></ul><ul><li>Sparsely feathered vestigial wings </li></ul><ul><ul><li>The wings are small and useless for flight </li></ul></ul><ul><li>Webbed feet </li></ul><ul><li>Uses its strong legs and webbed feet to swim and capture fish, eels, and octopuses </li></ul>Flightless Cormorant
  16. 16. <ul><li>28 other living species of cormorants, all of which use their wings for flight </li></ul><ul><li>Well-developed wing muscles, making their bodies thicker than the flightless cormorant </li></ul><ul><li>Legs are much more refined because they do not use them for swimming that much </li></ul><ul><li>Eat mainly fish </li></ul>Cormorant
  17. 17. Flightless Cormorant <ul><li>Found only in the Galapagos </li></ul><ul><li>Not found in the Galapagos </li></ul>vs. Cormorant <ul><li>Thick, strong legs for swimming </li></ul><ul><li>Small, vestigial wings </li></ul><ul><li>Streamlined body for swimming </li></ul><ul><li>Long, well-developed wings </li></ul><ul><li>Slender Legs </li></ul><ul><li>Heavier body </li></ul>National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  18. 18. Looking at Habitat Adaptations <ul><li>Choose one animal from each pair. </li></ul><ul><li>Explain how the traits you observed may help the animal survive or thrive in its habitat. </li></ul><ul><li>Give at least three examples of different traits and explain each one. </li></ul>
  19. 19. <ul><li>How have isolation and the unique conditions of the Galapagos Islands given rise to the unusual features of Galapagos animals? </li></ul><ul><li>Would they survive if they were introduced into similar ecosystems elsewhere in the world? </li></ul><ul><li>What kind of adaptations would allow existing Galapagos animals to survive in other habitats around the world? (Remember, organisms can’t adapt because they want to or need to.) </li></ul>Final Questions

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